Tune sheet or disk.



Patented Dec. 3|, I901.

n'. GABBIELSKY.

TUNE SHEE T DR DISK.

(Application filed Apr. 4, 1901.)

(No Model.)

j I U ITED STATES I PATENT @FFICE.

RICHARD GABRIELSKY, JERSEY crrv, NEW JERSEY.

.TUNE SHEETOR DISK.,

- 'srzso rroarrosr' forming part of LettersPatent no.e9o,264, dated December 31, 1901.

" A pplicationfiled April 4, 1901. semi No. 54,310. (No mo el-i To all whom-it may wnw Beitknown that'I, RICHARD GABRIELSKY,

} a citizen of the United States, residing at Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Tune Sheets or Disks; and I-dohereby declare the following r to be a full,'clear, .and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and use the same. v

This invention relatesto a time sheet or disk, and more particularly to the note teeth or projections ofjsuch a sheet fora mechanical musical instrument.

The object of my invention is to provide a tooth or projection in a tune sheet ordisk of astrong and durable construction which will effectively resist the pressure and wear due to the frequent contact thereof with the points of the star-wheel or contact-wheel or other part of a'm'echanicalmusical instrument.

In my tune sheet, disk, or band the teeth or projections are cut or stamped out by means of a die from the body of a metal sheet [and are each made with-a-vertio al portion having a square outer end, also with a diagonal brace or stay-attached to the rear face and to the metalsheet,"the tooth and diagonal brace being integral with the sheet. The diagonal brace or stay is attached at both .its ends, being a continuous part of the metal in the tooth and sheet, so that it is not liable to displacement and will rigidly support the tooth.

' The details of construction of my improved tune-sheet with teeth or projections are illustrated. in the accompanying. drawings, in

which Figure 1 represents a perspective view of a part of a tune disk or sheet made in accordance with my invention. Fig. 2 represents a Vertical section, on an enlarged scale,- of a tooth on line or m, Fig. 4. Fig. 3 represents a section on line y y, showing the front face of a tooth. Fig. at represents a top plan view showing the'top edge of the tooth and its brace. Fig. 5 represents. a top plan view of a portion of a metal sheet, indicating lines of the cut of exaggerated length made in stamping out the tooth and brace. Fig. 6 repre-" sents an. elevation of a portion of a disk or sheet, a tooth, and a star-wheel.

The sheet or disk A or a band, plate, or cylinder is made of any suitable sheet metal, and the note projections or teeth are struck up therefrom by means of suitable dies,whioh may be operated by hand or machinery. The

note projection b is preferably made rectangular with a straight outer edge f and is provided at its rear face with a diagonal stay or brace c, which is also struck up from the metal sheet, being a continuation of the metal inthe tooth and the sheet, as shownin Figs. 1, 2, and 5. In Fig. 5 the intersecting lines o, e, and 6 indicate the lines of cut made by the dies to form the tooth, and the lines it n indicate the cut to form the stay or brace, the lines for the purpose of illustration being shown of exaggerated length. The dotted lines-show where the tooth and brace are bent. The tooth b is bent up into a perpendicular position, leaving an opening a, and the brace 0 into a diagonal or slanting position, as clearly shown in Figs. 2, 3, and 4. The tooth and its brace may be cut and struck up from the metal sheet by one stroke or movement of the die. The diagonal brace 0 being placed midway between the lateral edges of the tooth and forming anintegral portion thereof and metal plate makes the tooth quite rigid and effectually supports it against bending. The tooth will be best supported in the middle, where it strikes against the teeth or points d of-the star-wheel D, as shown in Fig. 6. It will be noted that the front face of the tooth is plain and fiat where it makes contact with the points or teeth of the star wheel or sprocket-wheel and that the tooth is so rigidly supported that it will produce strong clear tones. in the instrument to which the tune sheet or disk is applied. It is also to be noted that the parallel cuts 11. n, Fig. 5, extend up into the tooth portion 1) and to the rear thereof into the body of the metal sheet, so as to form an effective brace and support for the tooth.

In practice the teeth bare not usually made so large as those shown in Fig. 1, and both the tooth and brace are struck up in a die,

in which operation the metal in the brace is upset or crowded and thickened, being thus strengthened.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. A tune sheet, disk or band havinga note tooth or proj eetion and a diagonal brace therefor attached at its ends and being a continuous'part of the metal in the tooth and body of the sheet, substantially as described.

2. A tune sheet, disk or band having'a perpendicular note tooth or projection and a diagonal brace struck up from the sheet metal and integral therewith, the brace being attached at its ends and a continuation of the metal in the tooth and body of the sheet, substantially as described.

3. A tune sheet, disk or band having a perpendicular note tooth or projection and a di- 20 agonal brace struck up from the sheet metal and integral the1-ewith,-the brace being at tached midway between the lateral edges at the rear face of the tooth and to the body of the sheet, substantially as described. 25

4. A note projection for a tune sheet, dish or band, composed of a square or rectangular portion and a brace portion made by parallel cuts extending into the tooth and rearward from its base into the body of the sheet, and bent into place, substantially as described. I

In testimony whereof I aifix my signature 1 in presence of two witnesses.

Witnesses:

CHAS. I. CURTIS, HENRY L. R. VAN DYCK.

RICHARD GABRIELSKY. f a 

